Inserts into sl_log tables timing out (related to the dataloss bug)

Hi,

there's another bug I've been seeing from time to time, but was unable to reproduce it until today.

We have statement_timeout set to 10 seconds and we would sometimes get timeouts on extremely simple statements, like
single-row inserts. I believe this is caused by a waiting TRUNCATE in logswitch_finish() blocking writes to sl_log.

To reproduce:

1. follow steps 1 to 4 as described here:
http://lists.slony.info/pipermail/slony1-general/2009-July/009663.html

2. Instead of committing in terminal 1, open a third instance of psql and run:

SET statement_timeout TO '3s';
INSERT ... -- (any table which has a logtrigger will do)

You should get the following error:
ERROR: canceling statement due to statement timeout
CONTEXT: SQL statement "INSERT INTO _clustername.sl_log_1 (log_origin, log_txid, log_tableid, log_actionseq,
log_cmdtype, log_cmddata) VALUES (1, "pg_catalog".txid_current(), $1, nextval('_clustername.sl_action_seq'), $2, $3); "

Please let me know if there's something I can do to help fix these problems.

Regards,
Aleksander